Slavs are the largest Indo-European ethno-linguistic group in Europe. They are native to Central Europe, Eastern Europe, Southeastern Europe, Northeastern Europe, North Asia and Central Asia. Slavs speak Slavic languages of the Balto-Slavic language group. From the early 6th century they spread to inhabit most of Central, Eastern and Southeastern Europe.
States with Slavic languages comprise over 50% of the territory of Europe. Present-day Slavic people are classified into West Slavs (chiefly Poles, Czechs and Slovaks), East Slavs (chiefly Russians, Belarusians, and Ukrainians), and South Slavs (chiefly Serbs, Croats, Bosniaks, Macedonians, Slovenes, and Montenegrins of the Former Yugoslavia as well as Bulgarians). For a more comprehensive list, see the ethnocultural subdivisions. Modern Slavic nations and ethnic groups are considerably diverse both genetically and culturally, and relations between them – even within the individual ethnic groups themselves – are varied, ranging from a sense of connection to mutual feelings of hostility.